I want to create a report pdf from wizard, but it's not working, here's my code:

/var/www/html/odoo_15/addons/school/wizard/search_and_print_calendar_wizard_view.xml

    
        Search and Print Calendar
        school.search.and.print.calendar.wizard
        
            
                
                    
                        
                        
                        
                    
                
                
            
        
    

    
        School Search and Print Calendar
        school.search.and.print.calendar.wizard
        form
        new
    

/var/www/html/odoo_15/addons/school/wizard/search_and_print_calendar_wizard.py

from odoo import api, models, fields, _

class SearchAndPrintCalendarWizard(models.TransientModel):
    _name = "school.search.and.print.calendar.wizard"
    _description = "Search and Print Calendar Wizard"

    student_id = fields.Many2one('school.students', string='Student', required=True)
    date_from = fields.Datetime(string='Date From')
    date_to = fields.Datetime(string='Date To')

    # view list calendars based on student id
    # def school_view_calendars(self):
    #     print('aaa')

    def school_print_calendars(self):
        data = {
            'form': self.read()[0]
        }
        report_action = self.env.ref('school.action_report_calendar').report_action(self, data=data)

        return report_action

/var/www/html/odoo_15/addons/school/report/calendar_report.xml

    


    
        
        
            
            Calendar Report
            school.search.and.print.calendar.wizard
            qweb-pdf
            
            'Calendar - [%s]' % (object.sequence).replace('/', '')
            
            school.report_calendar
            
            school.report_calendar
            
            
            report
        
    

    
    
        
            
            
            
                
                

                    

                    

                        
This is a test

                    

                

            
        
    

AttributeError: 'NoneType' object has no attribute 'compile'
AttributeError: 'NoneType' object has no attribute 'CompileError'

Full issue here:

Traceback (most recent call last):
  File "/var/www/html/odoo-server/odoo/odoo/api.py", line 886, in get
    return field_cache[record._ids[0]]
KeyError: 
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/var/www/html/odoo-server/odoo/odoo/fields.py", line 1057, in __get__
    value = env.cache.get(record, self)
  File "/var/www/html/odoo-server/odoo/odoo/api.py", line 889, in get
    raise CacheMiss(record, field)
odoo.exceptions.CacheMiss: 'base.document.layout(,).preview'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/var/www/html/odoo-server/odoo/addons/web/models/base_document_layout.py", line 290, in _compile_scss
    return libsass.compile(
AttributeError: 'NoneType' object has no attribute 'compile'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
  File "/var/www/html/odoo-server/odoo/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 688, in dispatch
    result = self._call_function(**self.params)
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/var/www/html/odoo-server/odoo/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 349, in checked_call
    result = self.endpoint(*a, **kw)
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 917, in __call__
    return self.method(*args, **kw)
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 536, in response_wrap
    response = f(*args, **kw)
  File "/var/www/html/odoo-server/odoo/addons/web/controllers/main.py", line 1335, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/var/www/html/odoo-server/odoo/addons/web/controllers/main.py", line 1327, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/var/www/html/odoo-server/odoo/odoo/api.py", line 464, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/var/www/html/odoo-server/odoo/odoo/api.py", line 451, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/var/www/html/odoo-server/odoo/odoo/models.py", line 6475, in onchange
    snapshot1 = Snapshot(record, nametree)
  File "/var/www/html/odoo-server/odoo/odoo/models.py", line 6257, in __init__
    self.fetch(name)
  File "/var/www/html/odoo-server/odoo/odoo/models.py", line 6267, in fetch
    self[name] = record[name]
  File "/var/www/html/odoo-server/odoo/odoo/models.py", line 5874, in __getitem__
    return self._fields[key].__get__(self, type(self))
  File "/var/www/html/odoo-server/odoo/odoo/fields.py", line 1106, in __get__
    self.compute_value(recs)
  File "/var/www/html/odoo-server/odoo/odoo/fields.py", line 1265, in compute_value
    records._compute_field_value(self)
  File "/var/www/html/odoo-server/odoo/odoo/models.py", line 4256, in _compute_field_value
    getattr(self, field.compute)()
  File "/var/www/html/odoo-server/odoo/addons/web/models/base_document_layout.py", line 121, in _compute_preview
    preview_css = markupsafe.Markup(self._get_css_for_preview(styles, wizard_with_logo.id))
  File "/var/www/html/odoo-server/odoo/addons/web/models/base_document_layout.py", line 270, in _get_css_for_preview
    css_code = self._compile_scss(scss)
  File "/var/www/html/odoo-server/odoo/addons/web/models/base_document_layout.py", line 298, in _compile_scss
    except libsass.CompileError as e:
Exception
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 644, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/var/www/html/odoo-server/odoo/odoo/http.py", line 302, in _handle_exception
    raise exception.with_traceback(None) from new_cause
AttributeError: 'NoneType' object has no attribute 'CompileError'